72155006 has 32 divisors (see below), whose sum is σ = 136304640. Its totient is φ = 27828000.

The previous prime is 72154997. The next prime is 72155029. The reversal of 72155006 is 60055127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13235 + ... + 17873.

It is an arithmetic number, because the mean of its divisors is an integer number (4259520).

Almost surely, 2^72155006 is an apocalyptic number.

72155006 is a deficient number, since it is larger than the sum of its proper divisors (64149634).

72155006 is a wasteful number, since it uses less digits than its factorization.

72155006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 72155006 is about 8494.4102797075. The cubic root of 72155006 is about 416.3150927311.

It can be divided in two parts, 7215 and 5006, that added together give a palindrome (12221).

The spelling of 72155006 in words is "seventy-two million, one hundred fifty-five thousand, six".